Published by ETF Compass · a Lambda Software product
Published 18 August 2026. Updated 24 September 2026.
Market risk and diversification are not the same thing
ETF values can fall, sometimes sharply, and recovery is not guaranteed on a particular timetable. A fund can hold many securities yet still be concentrated in one region, sector, company group, asset class, or investment style. Diversification may reduce exposure to a single holding, but it does not eliminate market losses.
Read a fund’s objective, index methodology, holdings, and concentration disclosures rather than assuming that “ETF” describes a single risk level.
Tracking and liquidity deserve product-level checks
An ETF may not exactly match its reference index after fees, taxes, trading costs, sampling choices, securities lending, and portfolio changes. This is tracking difference or tracking risk. Liquidity also has two layers: how readily the ETF itself trades and how readily its underlying holdings can be traded. During stressed markets, quoted spreads and execution conditions can change.
ETF Compass does not select funds, inspect a prospectus, measure tracking difference, or estimate spreads and order execution.
Currency and costs can affect realised results
A fund’s trading currency is not necessarily the currency exposure of the assets it holds. Exchange-rate movements, conversion fees, hedging methods, and local spending currency can all matter. Fees can include the fund’s total expense ratio as well as brokerage, conversion, custody, spread, and tax costs. The calculator has inputs for selected costs and a simple terminal stress adjustment, not a complete currency or cost model.
Behavioural risk is real even when it has no formula
Changing a plan after a market fall, chasing a recent winner, or investing money needed soon can change outcomes more than a small adjustment to an assumed annual return. A useful plan separates emergency cash and short-term obligations from money assigned a longer, uncertain horizon. This is a planning prompt, not a personal recommendation.
Worked example: a lower return is only one risk test
Test sensitivity without calling it a forecast
Open a €5,000 initial investment with €300 monthly deposits over 20 years. Compare 6% growth, 2% inflation, and 0.20% TER with 4% growth, 3% inflation, and 0.40% TER; hold the remaining settings constant. The difference illustrates dependence on stated return and cost assumptions. It does not quantify a market crash, concentration, tracking difference, liquidity, currency, product failure, or individual behaviour.
Open the lower-assumption illustrationETF Compass models entered deposits, return, selected fees, inflation, taxes, and stress. It does not model all risks and does not recommend or choose ETFs.
Build a document-to-scenario checklist
Before using a named preset, make a small research record outside the calculator. A ticker alone is not enough: match the issuer, full fund name, ISIN, share class, domicile, distribution policy, and document date. Do not upload account statements or identity documents to ETF Compass.
- Product documents: open the issuer’s current KID where applicable and prospectus. Note the intended investor, risks, costs, and investment objective. The European Commission’s KID explanation describes the summary document; it is not a substitute for the fund’s full terms.
- Exposure: read the index methodology and dated holdings or factsheet. Record large holdings, sector/region concentrations, and whether the share class is hedged. These facts cannot be inferred from the trading currency.
- Trading: check the broker’s charge schedule and available spread/premium information for the intended listing. The SEC’s ETF bulletin explains these checks for US-registered ETFs; do not treat its US legal scope as a rule for every fund.
- Model mapping: label every input as document-backed, hypothetical, or not modelled. TER may map to an input; concentration, execution conditions, and product structure do not. An attractive result does not resolve an unanswered risk.
A useful record is explicit about gaps
For a €300 monthly scenario, record the exact share class and dated TER source; leave expected growth labelled “hypothetical”. Note that the model makes €900 quarterly purchases, and list spreads or custody charges separately if they are missing from the model. Recheck the record when documents or your circumstances change.
Editorial update, 24 September 2026: added this document-to-input workflow and reviewed the two references linked in this section. No fund is recommended or certified by this checklist.
Sources
- Investor.gov: What is risk? (accessed 18 August 2026)
- Investor.gov: Exchange-traded funds (accessed 18 August 2026)
- ESMA Investor Corner (accessed 18 August 2026)
Education, not personal advice
This article is general education, not a recommendation to buy, sell, hold, or allocate to an investment. Consider regulated professional advice where appropriate to your circumstances.